As articles in the September 1972 issue of Scientific ... <br/><br/>
Scientific American book  communication 
ed by Dennis Flanagan 
 - San Francisco  W.H. Freeman & Co.,  1972 
 - vii  136p. incl. bibl., ind. 
<br/><br/><label>ISBN: </label>0716708663 
<br/><br/><label>Dewey Class. No.: </label>001.5  / N72